AtRndmGen_test.cxx

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/** @file AtRndmGen_test.cxx
 *  @brief  unit test for AtRndSvc
 *
 * based on ATLAS software 
 * 
 **/
 
#include <cassert>
#include <iostream>
#include "TestTools/initGaudi.h"
#include "GaudiKernel/ISvcLocator.h"
#include "AthenaKernel/IAtRndmGenSvc.h"
#include "StoreGate/tools/hash_functions.h"
#include "CLHEP/Random/RandomEngine.h"
 
using std::cerr;
using std::cout;
using std::endl;
using namespace Athena_test;
 
int main() {
  ISvcLocator* pSvcLoc(0);
  if (!initGaudi("AtRndmGen_test.txt", pSvcLoc)) {
    cerr << "This test can not be run" << endl;
    return 0;
  }  
  assert(pSvcLoc);
 
  IAtRndmGenSvc* pAtRndmGen(0);
  assert((pSvcLoc->service("AtRndmGenSvc", pAtRndmGen, true)).isSuccess());
  assert(pAtRndmGen);
  //  this depends on AtRndmGen_test.txt
  HepRandomEngine* pEng(pAtRndmGen->GetEngine("PITHIA_INIT"));
  assert(pEng);
  const long* seeds(pEng->getSeeds());
  assert(1 == seeds[1]-seeds[0]);
 
  pEng=pAtRndmGen->setOnDefinedSeeds(1,"PITHIA");
  assert(pEng);
  seeds = pEng->getSeeds();
  //  this depends on the details of setOnDefinedSeeds
  assert(9000 == seeds[0]-seeds[1]);
  assert(SG::simpleStringHash("PITHIA") == seeds[0] - 10000);
 
  cout << "*** AtRndSvc_test OK ***" <<endl;
  return 0;
}